JPS5914150B2 - hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a mounting plate that is fixed to the inside of a door mounting frame, and a cup-shaped fixing member that is embedded in the door and fixes the door. The present invention relates to a hinge that is pivotally connected by a link and has a locking function in a closed state.

The above-mentioned hinge has been known in the past, but its door closing locking mechanism is such that the mounting plate and the fixing member are provided with an engaging protrusion and an engaging element, respectively, so that they can be locked to each other when the door is closed, and the hinge is elastically attached. The engaged element is configured to come into contact with the engagement protrusion, move backward against the elastic contact force of the compression spring, return forward, and engage with the engagement protrusion.

However, according to the above-mentioned configuration, the engaging element and the engaging part are brought into contact with each other on an inclined surface or a curved surface to cause the engaging element to retreat in the component force direction of the contact force between the two, and the engaging element There is a state of frictional contact with the engaging protrusion, so the frictional force may cause the door to close or open unsmoothly, require lubricating oil, and be made of metal material that can withstand the frictional force. Therefore, the materials used are expensive and limited.

Therefore, as a result of studies in view of the above-mentioned conventional drawbacks, the present invention has been developed.
A rotary engager provided with an abutting part and an engaging part is pivoted to the mounting plate so that it can be rotated forward and backward beyond the dead center of its elastic spring by means of an elastic contact mechanism, and when the door is closed, the abutting part comes into contact with the abutting part of the fixed member, and as a result, the rotary engager rotates beyond the dead center of the spring, so that the engaging part and the engaging part provided on the fixed member engage with each other. Due to this structure, frictional force is hardly generated, which allows the door to be locked and unlocked easily without the use of lubricating oil, and the spring acts effectively to lock the door. Furthermore, it can be manufactured using desired materials such as plastics and metals (its purpose is to rub it).

Hereinafter, the present invention will be described in detail based on drawings showing specific examples of implementation. As shown in FIGS. , embedded in the recess 4 recessed in the door 3 and screwed into the door 3.
In order to fix the cup-shaped fixing member 5, the cup-shaped fixing member 5 and the fixing member 5 are pivotally connected to each other at their front ends by pivots 7 and 8 via one or more links or arms 6.6'. be.

The mounting plate 2 is formed of a mounting member 2a fixed to the door mounting frame 1, and an adjustment member 2b supported so as to be adjustable in the front, rear, left and right directions with respect to the member 2a. The forwardly protruding portion and the fixing member 5 are connected as described above, and when the door is closed, the front end of the adjusting member 2b is inserted into the recess 5a of the fixing member 5 together with the link and arm 6.6'. It has become so.

Further, in the first embodiment shown in FIGS. 1 to 3, the fixing member 5 is integrally formed of plastic or the like, while in the second embodiment shown in FIGS. It is formed of a main body 5b that penetrates approximately the center part, and an auxiliary body 5c that is fitted into the hole 4a of the door 3 and fixed with a screw 8 to fix the door 3 between the main body 5b and the main body 5b. There is.

Thus, at the front end of the mounting plate 2, a rotary engager 9 having an engaging portion 9a and an abutting portion 9b provided at the tip thereof, and an elastic contact mechanism 10 of the rotary engager 9 are arranged front and rear, and pivoted. 7 and 11, and in order to apply a forward and reverse force to the rotary engager 9 beyond the dead center a of the elastic spring 10a in the elastic contact mechanism 10, the base end of the rotary engager 90 is and the tip of the elastic contact mechanism 10 are related to each other so as to be rotatable with each other as will be described in detail later.

On the other hand, the fixing member 5 has an engaging portion 9 of the rotary engager 9.
An engaging part 12 and an abutting part 13 are provided which engage and abut each other with the abutting part 9b and the abutting part 9b. As a result, the rotary engager 9 rotates and passes the dead center a of the elastic spring 10a in the elastic contact mechanism 10, and the hook engaging portions 9a and 1
2 engage with each other to lock the door closed.

Here, according to the first embodiment shown in FIGS. 1 to 3, the rotary engager 9 has an engaging portion 9a formed in a concave shape, and abutting portions 9b are provided on both left and right sides of the engaging portion 9a. On the other hand, the fixing member 5 has an engaging portion 12 protruding from the side wall, thereby forming an abutting portion 13 on the side surface thereof.

Further, the rotary engager 9 according to the second embodiment shown in FIGS. 4 and 5 has a tip portion curved into a substantially beak shape on the side, the inner surface thereof serving as the engaging portion 9a, and the outer surface serving as the abutting portion. 9b, and the fixing member 5 has a through hole 5d in its main body 5b, and its front and rear edges are formed as an engaging portion 12 and an abutting portion 13.

Further, the elastic contact mechanism 10 includes a rotating member 10b which is located on the mounting plate 2 and whose base end is rotatably supported on the pivot shaft 11, and an elastic spring 10a is interposed between the rotating member 10b. and a movable member 10c elastically connected to the base end of the rotary engager 9, and a first movable member 10c.
According to the embodiment, the movable member 10c and the rotary engager 9
is rotatably mounted on a pivot shaft 14. In the second embodiment, the distal end of the movable member 10c is formed into an arcuate convex surface 15, and on the other hand, the proximal end of the rotary engager 9 is formed with a concave surface 16. hand,
The concave and convex surfaces are engaged with each other and are rotatably connected.

In addition, the rotational engager 9 and the fixed member 5 are made of plastic,
It is made of a desired material such as metal.

In the above configuration, when the door 3 is attached to the door mounting frame 1 as shown in the illustrated example, the rotary engager 9 moves beyond the dead center a of the elastic spring 10a in the elastic contact mechanism 10 in the normal rotation direction. , or in the reverse direction ＼, that is, in the open state the door is elastically rotated in the counterclockwise direction ＼, and in the closed state it is elastically rotated in the clockwise direction. When the door is closed, the rotary engager 9 first moves before the door is closed.
As shown in FIGS. 2 and 5, the contact portion 9b abuts against the contact portion 13 of the fixed member 5 and presses the rotary engager 9 in the clockwise direction.

Therefore, when the door 3 is further closed, the rotary engager 9 is rotated to a position exceeding the dead center a of the elastic spring 10a, and the rotary engager 9 is rotated in the clockwise direction by the restoring force of the elastic spring 10a. At this time, the rain engaging portions 9a and 12 are engaged with each other, and the door is closed by applying a closing force to the fixing member 5.

Furthermore, since the rotary engaging member 9 is elastically biased in the clockwise direction by the elastic mechanism 10, the door is kept locked in the closed state and will not be opened inadvertently.

Furthermore, when the door 3 is rotated in the opening direction from the closed state shown in FIGS. 3 and 4, the rotating engagement member 9 is suppressed and rotated counterclockwise by the engaging portion 12 of the fixed member 5, so that When the door is opened, the engaging portions 9a and 12 are disengaged as shown in FIGS. 2 and 5.

In other words, at this time, the rotary engagement element 9 is rotated to a position beyond its dead center a while compressing the elastic spring 10a, so that from then on, the door opening operation is performed without being affected by the elastic spring 10a. is carried out, and the rotary engaging element 9 is prepared for the next door closing lock.

As explained above, according to the hinge according to the present invention, the mounting plate 2 is fixed to the door mounting frame 1 and the door 3, respectively.
, is a hinge having a door-closing locking function, in which the fixing members 5 are pivotally connected to each other via arms 6, 6', etc., and the mounting plate 2 has at least an engaging portion 9.
The rotary engagement element 9 and the elastic contact mechanism 10 provided with the contact portions 9a and 9b are pivoted in a linked state in order to apply a forward and reverse force to the rotation engagement element 9 beyond the dead center of the elastic spring 10a. When the door is closed, the abutting part comes into contact with the abutting part 13 of the fixed member 5, so that the rotary engaging element 9 rotates past the dead center of the elastic spring 10a, and the engaging part 12 and the above-mentioned abutting part rotate. Since the engaging portion 9a provided on the fixing member 5 is engaged to lock the door closed,
Not only the fixing member 5 but also the mounting plate 2 can be formed to the same size as a conventional hinge without a locking function, and both the engaging portions 9 of the fixing member 5 and the rotary engager 9 can be formed.
When a and 12 engage and disengage, the operation is performed by the rotation of the rotary engager 9 with almost no frictional force, so the door can be locked and unlocked very easily without the need for lubricating oil. In addition, since the elasticity of the elastic spring 10a in the elastic contact mechanism 10 effectively acts on the rotary engager 9, the door closing lock can be held reliably.

In addition, since the engaging portion 12 of the fixed member 5 and the engaging portion 9a of the rotary engager 9 are in a stationary state with almost no friction, the fixed member 5 and the rotary engager 9 are not affected by the frictional force of metal or the like. Since it can be made of a material that is easily worn against the body, and the material of the forming member is not limited, it can be easily and inexpensively manufactured.

[Brief explanation of the drawing]

Figures 1 to 3 show a first embodiment of the hinge according to the present invention, where Figure 1 is a longitudinal side view of the door in its open state, and Figure 2 is a longitudinal side view of the door in its state immediately before closing. , FIG. 3 is a longitudinal sectional side view of the door in its closed state, and FIGS. 4 and 5 respectively show a second embodiment of the hinge according to the present invention. FIG. FIG. 5 is a longitudinal sectional side view of the door immediately before closing. 1...Door mounting frame, 2...Mounting plate, 3...Door, 5...Fixing member, 6, 6'... Link and arm, 7, 8,
11.14... Pivot, 9... Rotating engager, 9a, 12... Engaging portion, 9b. 13... Contact portion, 10... Elastic contact mechanism,
10a... Elastic spring, 15... Convex surface,
16...Concave surface.

Claims (1)

[Scope of Claims] 1. A hinge having a door-closing locking function, in which a door mounting frame, a mounting plate fixed to the door, and a fixing member are pivotally connected to each other via an arm, etc. The rotary engager and the elastic contact mechanism, both of which are provided with an engaging part and a contact part, are connected to each other in order to apply a forward and reverse force to the rotary engager beyond the dead center of the elastic spring. When the door is closed, the abutting part comes into contact with the abutting part of the fixed member, causing the rotary engager to rotate past the dead center of the elastic spring, and the engaging part and the fixing member rotate. A hinge characterized in that it is configured to engage with a provided engaging portion to lock the door closed. 2. The rotary engager is pivotally connected to the elastic contact mechanism between the pivot thereof and the pivot of the elastic contact mechanism. 3. The hinge according to claim 1, wherein the rotary engager is rotatably engaged and connected to the elastic contact mechanism between its pivot and the pivot of the elastic contact mechanism with a concave surface and a convex surface. A hinge according to claim 1.